In five in the six samples made up of AB?FUBINACA M3 no less than 1 metabolite of 5F?AKB48 was also detected. This can be a result of concomitant intake of possibly AB?FUBINACA, AMB?FUBINACA or EMB?FUBINACA and 5F?AKB48 from two diverse products and solutions, but it really can also be because of intake of an item that contains both of those drugs